I'm working on creating a pre-industrial culture of tundra-nomads that herd large, yak-like beasts with large bodies and thick wool, but I'm having trouble figuring out what their clothing would look like. They would definentially have to be warm enough to allow them to survive through the cold temperatures of the long winter, probably by implementing the wool provided from their creatures, but I'm not sure how it would look or even function for a people who have to do a large amount of physical activity. Any answer helps!
Herd Beast Hide Coat
The above is a Sami Reindeer hide coat. The Sami are a nomadic people who traditionally herd reindeer in Northern Scandinavia.
Of course there are also less rugged traditional wear. Perhaps something like this was worn under the parka and around the house.
I cannot tell you how much of the above is actually traditional and how much is "for the tourists". But it is a starting point to start researching for yourself.
Certainly a reindeer hide coat sounds like good weather protection. But it is stiff and waterproof since you have the reindeer skin and not just the fur coat. So you need something less hairy to wear underneath.
Also check out the Karelians, the Native Americans/Canadians, and the Nenets people in North Mongolia.
A useful technique is layered clothing. Basically, several thin layers of clothing can keep a person much warmer and be much more flexible than one big layer of equal thickness. You can have them wear soft down shirts, or vests under knitted sweaters, or doublets under hide coats, or ponchos, or what have you. Use whatever fits your culture.
Model your clothes on the Tarim mummies.
Here is Cherchen man in the clothes he was buried in, 3000 years ago.
But Science News has a fine description of what he actually was wearing.
He sported an outfit that consisted of the trousers, a poncho belted at the waist, one pair of braided bands to fasten the trouser legs below the knees, another pair to fasten soft leather boots at the ankles and a wool headband with four bronze disks and two seashells sewn on it.
Let me show you those serious hard rocking pants!
So: belted poncho, belted boots, pants with multicolor accent bands and braids to hold the legs. And headband. I am not sure why he did not have on the headband for his picture but the 4 bronze discs and shells sounds cool. I hope you are making a graphic novel!